Okay guys, i dont know if this could be a coincidence, but ever since i bought some flame moss tied to some drift wood the water in my tank got really green, I just did an 80% water change, the water looked all nice and clear again, but after a few days it got all green again =/. Is the cause of the green water the flame moss in my tank? I also have some flame moss carpets, an unknown plant lol and a plant which seems to be a water wisteria if im not mistaken. My tank is next to a window but the curtains are always closed so no sunlight there, and i usually turn on the lights for about 9 hours - 12 hours a day. Sometimes i turn them off when theres no fish viewing going on. But i really dont like the green water, makes my tank look kinda dirty =/ Any idea whats cause the green water?.